Then, if needed, look at the source code in t/02parse.t and figure out why the particular failing test cases are failing. Then, if needed, look at the source code of the module that gets executed for the test and figure out what is causing the failure. Then, if needed, post questions about what you find to try to solicit help diagnosing.

You can even combine the first 3 steps into one session by using the Perl debugger: